Coccyx

The striated musculature of the pelvic floor provides dynamic support for the visceral contents of the abdominopelvic cavity. The pelvic floor consists of the pelvic diaphragm and the perineal membrane, which are described separately (Fig. 3) (3). The pelvic diaphragm refers to the levator ani group (LAG), the coccygeus muscles, and the associated…